Financing Obligations (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 30, 2008 term_extension_option	Dec. 31, 2020 monthly_payment	Dec. 31, 2019 USD ($) real_property	May 19, 2008 real_property
Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
2020			$ 19,800
2021			16,400
2022			14,700
2023			11,600
2024			9,400
Thereafter			55,700
Total minimum lease payments			127,600
Less: interest/imputed interest			(37,300)
Total obligations			90,300
Less: current portion			(12,900)
Finance lease obligations, less current maturities			$ 77,393
Sale Leaseback Transaction Agreement for Properties
Sale Leaseback Transaction [Line Items]
Parcels of real property under sale leaseback transaction | real_property				181
Master Lease Agreement
Sale Leaseback Transaction [Line Items]
Parcels of real property under sale leaseback transaction | real_property			181
Gross proceeds of sale leaseback transaction			$ 337,200
Sale leaseback initial term	20 years
Number of options to extend initial leaseback term | term_extension_option	4
Extension period for options to extend sale leaseback initial term (in years)	5 years
Properties assigned to franchisee or released from lessor | real_property			155
Reduction in property and equipment and financing obligations as a result of sales transactions			$ 280,000
Sale-Leaseback Transactions
Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
2020			5,600
2021			5,100
2022			5,100
2023			5,000
2024			5,700
Thereafter			44,800
Total minimum lease payments			71,300
Less: interest/imputed interest			(32,800)
Total obligations			38,500
Less: current portion			(800)
Finance lease obligations, less current maturities			$ 37,700
Forecast
Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
Number of monthly obligation payments in fiscal year | monthly_payment		13